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* dwarf2-frame.c (decode_frame_entry_1): Handle CIE version 4.

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(struct dwarf2_cie) <segment_size>: New field.
	* dwarf2read.c (partial_read_comp_unit_head): Accept DWARF 4.
	(skip_one_die): Handle DW_FORM_flag_present, DW_FORM_sec_offset,
	DW_FORM_exprloc.
	(read_attribute_value): Handle DW_FORM_flag_present,
	DW_FORM_sec_offset, DW_FORM_exprloc.
	(dump_die_shallow): Likewise.
	(attr_form_is_section_offset): Handle DW_FORM_sec_offset.
	(dwarf2_const_value): Handle DW_FORM_exprloc.
	(attr_form_is_block): Likewise.
	(struct line_header) <maximum_ops_per_instruction>: New field.
	(dwarf_decode_line_header): Set new field.
	(dwarf_decode_lines): Handle new field.
This commit is contained in:
Tom Tromey
2010-04-20 17:33:14 +00:00
parent ce4b068214
commit 2dc7f7b33b
3 changed files with 114 additions and 15 deletions
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19
gdb/dwarf2-frame.c
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@@ -85,6 +85,9 @@ struct dwarf2_cie
/* The version recorded in the CIE. */
unsigned char version;
/* The segment size. */
unsigned char segment_size;
};
struct dwarf2_cie_table
@@ -1714,7 +1717,7 @@ decode_frame_entry_1 (struct comp_unit *unit, gdb_byte *start, int eh_frame_p,
/* Check version number. */
cie_version = read_1_byte (unit->abfd, buf);
if (cie_version != 1 && cie_version != 3)
if (cie_version != 1 && cie_version != 3 && cie_version != 4)
return NULL;
cie->version = cie_version;
buf += 1;
@@ -1738,6 +1741,20 @@ decode_frame_entry_1 (struct comp_unit *unit, gdb_byte *start, int eh_frame_p,
augmentation += 2;
}
if (cie->version >= 4)
{
/* FIXME: check that this is the same as from the CU header. */
cie->addr_size = read_1_byte (unit->abfd, buf);
++buf;
cie->segment_size = read_1_byte (unit->abfd, buf);
++buf;
}
else
{
cie->addr_size = gdbarch_ptr_bit (gdbarch) / TARGET_CHAR_BIT;
cie->segment_size = 0;
}
cie->code_alignment_factor =
read_unsigned_leb128 (unit->abfd, buf, &bytes_read);
buf += bytes_read;